A2 English Language B Coursework

I will be A2 in the new academic year, the coursework element. I have done some research but still feel rather confused and do not really know where to start. If someone could give me some advice or where to start would be great.

A Language Investigation into any area of language (preferably using a range of appropriate language methods/frameworks), with a Media Text linked to it. The MT needs to be based (perhaps loosely) on the topic of the investigation and have a clear informative purpose.
Some possible ones might be

an investigation into teacher talk in the classroom with an article aimed at potential new teachers on classroom language

an investigation into changing meanings of a set of key words over time with a web article aimed at broadsheet readers to look at attitudes to semantic change

an investigation into the structure of early children's speech across three different children of 4-6, with an article for a parenting magazine on children's language development.

I've put a few others together here but they are aimed primarily at A spec Language students who have to focus on spoken language.